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Principal Engineer

Job in O'Fallon, St. Charles County, Missouri, 63366, USA
Listing for: Nidec Motor Corporation
Full Time position
Listed on 2026-05-31
Job specializations:
  • Engineering
    Electrical Engineering, Electronics Engineer, Systems Engineer, Hardware Engineer
Salary/Wage Range or Industry Benchmark: 100000 - 125000 USD Yearly USD 100000.00 125000.00 YEAR
Job Description & How to Apply Below

Responsibilities

  • Act as technical lead and design authority for power electronics hardware across multiple products and platforms
  • Design switching power converters with a strong focus on efficiency, thermal management, EMI, reliability, and safety
  • Develop schematics and guide PCB layout for high-frequency and high-power circuits, ensuring optimal current loops, grounding, isolation, and thermal paths
  • Drive adoption of EMC-compliant hardware and layout practices from concept phase onward. Specify and validate current, voltage, and advanced sensors (including MEMS-based solutions) for control, protection, and diagnostics
  • Perform detailed electrical simulations, including circuit-level simulations (functional, signal transient, power losses)
  • Collaborate with firmware and controls engineers to ensure optimal hardware–software interaction and system-level performance
  • Support the definition and implementation of hardware safety functions aligned with applicable standards
  • Design electronics with a strong focus on long-term reliability under electrical, thermal, mechanical, and environmental stresses
  • Lead DFMEA and contribute to system-level risk assessments
  • Analyze test and field failure data, contributing to root-cause analysis and corrective design actions
  • Ensure robustness against electrical overstress, thermal stress, EMC disturbances, and misuse scenarios
  • Apply Design for Manufacturing (DFM) and Design for Test (DFT) principles throughout the development process
  • Support PCBA fabrication, assembly, and end-of-line testing strategy definition
  • Work closely with Manufacturing Engineering and Quality to resolve electronics assembly, yield, and test issues. Support ramp-up and production readiness activities
  • Provide technical support during pilot builds, validation builds, and mass production launches
  • Support preparation of technical documentation and test evidence required for certification and compliance activities
  • Participate in pre-compliance testing and troubleshooting to ensure successful formal certification
  • Lead or support technical engagement with key suppliers for Power semiconductors
  • Guide procurement on component selection, balancing performance, reliability & cost
  • Support value engineering and cost optimization initiatives without compromising robustness or compliance
Experience
  • 10+ years of experience in electronics engineering
  • 10+ years of experience in electric motors, industrial equipment, and drives design
  • Proven hands-on experience with power inverter topologies from 1 kW through 10 kW
  • Practical design ownership of active PFC hardware, implementing and supporting more than one topology across production programs
  • Repeated success in designing hardware that meets EMC emission and immunity requirements, including layout execution and pre-compliance validation
  • Extensive experience designing high-frequency power electronics, including switching devices, magnetics, and gate drive circuits
  • Experience implementing and validating hardware safety functions for motor control applications
  • Hands-on involvement in PCB layout collaboration and design reviews for high-power and high-speed boards released to manufacturing
  • Applied experience using circuit analysis and simulation tools to predict losses, transient behavior, and design margins
  • 5+ years of experience applying current and voltage sensing technologies in power electronics and control systems
  • Practical exposure to deploying advanced MEMS-based sensors in industrial or embedded electronics products
  • Direct involvement with PCBA manufacturing, including PCB fabrication, SMT/THT assembly constraints, and test strategy definition
  • Participation in product industrialization activities, including prototype builds, pilot runs, and production ramp-up support
Skills
  • Clear written communication skills for technical documentation, design rationale, and engineering review
  • Ability to communicate complex technical concepts clearly and concisely across diverse audiences, including nontechnical stakeholders
  • Confidence to challenge assumptions and decisions constructively using data, experience, and engineering judgment
  • Strong time management skills to balance deep technical work with…
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